Sudhir K Guru

Verified

Sudhir verified their affiliation via an institutional email.

Learn more

Verified

Sudhir verified their affiliation via an institutional email.

Learn more

• Ph D Plant Physiology
• Professor and Head at Govind Ballabh Pant University of Agriculture and Technology

In India rice is mostly grown through transplanting method. Sometimes, transplanting is delayed due to late onset of the monsoon, lack of irrigation facility and labour scarcity which ultimately affect physiological growth and yield of rice crop. For managing this situation foliar spray at vegetative and reproductive stage may be an option to incre...

The threat of global climate change mainly in term of heat and combined stress is one of the utmost serious concerns for farmers, and have a negative impact on agriculture production and challenging food security worldwide. A field experiment was conducted during Rabi season at Pulse breeding Block, G.B Pant University of Agriculture and Technology...

Rice (Oryza sativa L.) is highly sensitive to high temperature during its reproductive stages. This study aims to elucidate the effects of heat stress during reproductive stage on plant growth, total dry matter accumulation, and their correlation with grain yield in diverse rice genotypes. A field experiment in split plot design was conducted at G....

Green gram (Vigna radiata L.) is one of the most important and extensively cultivated crops in India. The average productivity of this crop is very low and one of the main reasons is competition from weeds. Yield reduction in green gram due to weed infestation ranges between 30-85%. Thus, effective weed management is an important key factor for enh...

Wheat (Triticum aestivum L.) is a vital staple crop essential for global food security, especially in developing countries. This study investigates the impact of foliar zinc (Zn) application on leaf expanse, dry matter accumulation, and their correlation with grain yield in wheat. Conducted over two cropping seasons (2019-20 and 2020-21) at the N.E...

Wheat (Triticum aestivum L.) is a crucial global food source, necessitating enhanced production to meet increasing demand. This study, conducted at GBPUA&T, Pantnagar, US Nagar, India, explores the impact of foliar-applied zinc (Zn) combined with chelators—methionine, histidine, and citric acid—on the growth and yield of wheat cultivar PBW343. Eigh...

Organic farming can give quality food without unfavorably influencing the soil health and the environment; be that as it may, a worry is whether enormous scope organic farming will create enough nourishment for India's huge population. The move towards organic farming brings up issues about supportability as well as about benefit and food security....

We honor here Dinesh Chandra Uprety (1945-2023), one of the most remarkable plant scientists of India, who devoted most of his life in solving the question of how best to tune the crop plants so that they can serve the growing human population in this world. We have provided here a glimpse of his personal life as well as his remarkable scientific c...

Abstract Zinc (Zn) is an essential micronutrient for plants and animals and its deficiency causes large scale yield losses in major crops such as rice. Zn is applied to the plants either through the soil or as foliar spray or both. The present study was carried out to evaluate the effect of foliar application of different concentrations (0, 0.25, 0...

Excessive and imprecise application of a limited range of macronutrients in wheat has resulted in a stark deficit of micronutrients, particularly zinc, making zinc insufficiency a major constraint in wheat production worldwide. A field study was conducted at the N.E. Borlaug Crop Research Centre, GBPUA&T, Pantnagar, India during the wheat cropping...

Background: Weeds are the major threat to direct seeded rice and a single strategy of weed control may not be effective for season-long weed control. Intending to accomplish the long-term and sustainable weed management of direct seeded rice, the integration approach of weed management strategies seems a better alternative. The current field study...

The present study on soil involved a field experiment performed during 2016-17 to assess the changes in soil quality and productivity in ongoing conventional/ organic farming cropping system of rice(variety Pant basmati 1)at Pantnagar. The soil samples were collected from each plot with a screw type auger from 0-15cm and 15-30cm depth after harvest...

Rice is one of the most widely consumed cereal crops providing a staple diet for half of the world’s population. Rice is highly susceptible to drought stress during reproductive/flowering stage, leading to significant reduction in plant height and grain yield. Leaf rolling is one of the acclimation responses and is used as a criterion for scoring d...

In India, the problem of water pollution is becoming serious. Water bodies are becoming toxic as India expands and urbanizes. Around 70 percent of the surface water in India is projected to be unfit for use. Polluted water restoration is a difficult technique, not just for large investments in physical and chemical restoration methods, difficult op...

In physical science, the term nanometer represent measurement as precise as 10-9 meters. In recent few decades the microscopic technologies have developed and reached a new advanced level which introduced us to a new tiny world of particles both biotic and abiotic, these particles are referred to as nanoparticles which typically means the particles...

Recently in 2019, the worst form of virus called “Covid-19” attacked human population. First infection worldwide was found in Wuhan, China in month of November 2019. Since then Covid-19 is explosively spreading through-out the globe with more than 5 million positive cases and more than 300k deaths. Understanding the medical concept, Coronavirus dis...

Among the quality parameters, bulk density, hydration capacity, seed volume, length/breadth ratio, alkali score, degree of polishing (%), available carbohydrate (%), total ash (%), crude fibre (%) and zinc content were unaffected by source of nutrients. However, significant effects of source of nutrients were observed in the parameters kernel hardn...

India contributes about one-third of the world acreage under rice. Rice is available in over 5000 varieties, of which Basmati rice occupies a prime position on account of its extra long superfine slender grains, pleasant, exquisite aroma, fine cooking quality, sweet taste, soft texture, length-wise elongation with least breadth-wise swelling on coo...

The present investigation was carried out to study the response of physiological seedling vigour parameters of wheat as influenced by different seed invigoration techniques. Seeds of wheat variety UP 2565 were treated with electromagnetic radiation (EMR) of 100 and 200 mT for one hour, hydropriming for 12 hours and plasma treatment for 6 minutes wh...

A field experiment was conducted during 2017-2018 at N. E. Borlaug Crop Research Centre of Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, to study effect of different integrated weed management practices on yield and economics of dry direct seeded rice in tarai region. Higher grain yield, biological yield, harvest index...

Tomato is an important crop and has immense health benefits and medicinal value. Here, we described how salinity stress affects tomato plant growth and developmental processes and productivity. It causes ionic toxicity, oxidative damage, osmotic stress, and hormonal imbalance. In this review, we emphasized the crucial role of ethylene (ET) towards...

Sowing time and fertilization for rice cultivation is very important for growth and optimum yield. Due to some or the other factors like poor weather condition, delayed monsoon, late harvest of previous crop, farmers have to go for late sown condition which has negative impact on growth and yield of rice resulting in yield reductions. Optimizing th...

Weed infestation is one of the most severe problems affecting rice production worldwide. Current weed control practices are either costly or pose a threat to the environment. The use of competitive rice genotypes seems to be a promising strategy. The aim of our study was to improve the allelopathic potential of three selected rice genotypes by foli...

Phalaris minor Retz. is a major weed of wheat crop across many continents. It is highly competitive in nature and mimics the wheat morphology. Consideration is given to the eradication of isoproturon resistance Phalaris minor and management approaches designated to minimize the impact of resistance. For management of isoproturon-resistant Phalaris...

India contributes about one-third of the world acreage under rice. Rice is available in over 5000 varieties, of which Basmati rice occupies a prime position on account of its extra long superfine slender grains, pleasant, exquisite aroma, fine cooking quality, sweet taste, soft texture, length-wise elongation with least breadth-wise swelling on coo...

A laboratory experiment was conducted to assess the allelopathic effect of aqueous extracts of sorghum and sunflower on germinating seedlings of Phalaris minor and wheat. 10% (w/v) aqueous extracts of sorghum and sunflower were applied on the seed of Phalaris minor and wheat and the parameters like germination percent, relative germination ratio, s...

Widespread resistance in Phalaris minor is a major challenge for sustainable productivity. Recent increases in the development of herbicide resistance in Phalaris minor worldwide demand a high up strategies to control this weed. Herbicide-resistant weeds are a constraint to weed management. The use of potential management strategies is crucial in a...

The investigation was conducted during the winter season of 2014-15 to study the herbicidal efficacy of different herbicides on three problematic weed species of winter season viz., Phalaris minor, Medicago denticulata and Anagallis arvensis. The field experiment was conducted at Norman E. Borlaug Crop Research Centre, G. B. Pant University of Agri...

The present study on soil, a field experiment was conducted during 2016-17 to assess the changes in soil quality and productivity in ongoing conventional / organic farming cropping system. Rice variety pant basmati 1 and wheat UP-2565 was used during the study. The soil samples were collected from each plot with a screw type auger from 0-15 cm and...

Appearance of herbicide resistant weeds is an upfront threat to utility and sustainability of cropping in general and herbicides in particular. A plant is attributed resistant to a herbicide if it is able to survive a normally lethal dose of that herbicide. The resistance can be grouped as cross resistance (resistance against many herbicides of the...

The intensive use of pesticides with low biodegradability and high persistence in soil, surface and ground waters, represents a considerable environmental risk, especially under high weed pressure conditions. Furthermore, the number of herbicide-resistant weeds is increasing. Against this background, the investigation of alternative weed control st...

Abstract Plants being sessile in nature have to face several adverse environmental conditions throughout their life cycle. The adverse environmental conditions include both abiotic and biotic stresses. Plant responses to these stresses are complex and involve numerous physiological, molecular, and cellular adaptations. Their perception and response...

An experiment was conducted during years 2016-17 and 2017-18 to determine the effect of leaf to fruit ratio on the physico-chemical quality of guava planted under high density. Plants at four spacing namely S1= 1.0 m x 1.0 m, S2= 1.5 m x 1.5 m, S3= 2 m x 1 m and S4= 2 m x 1.5 m were selected and different leaf to fruit ratio treatments of T1=4:1, T...

The objective of the experiments undertaken for the present was to develop inexpensive technology for detection of beneficial soil microbiota with help of synthetic polymeric membrane. The surface of PCTE membrane was modified by gold, this confirmed by FTIR,EDX, and the impedance corresponding to each step of membrane modification was observed and...

Postharvest loss can be defined as the degradation in both quantity and quality of a food production from harvest to consumption. Quality losses include those that affect the nutrient/caloric composition, the acceptability, and the edibility of a given product. These losses are generally more common in developed countries. Quantity losses refer to...

Indian agriculture, passing through various revolutions ,has made appreciable achievement in terms of production & productivity ,availability of food grains, horticultural produce, milk, meat & fish which has been possible through technological interventions and critical role played by Indian council of agriculture research (ICAR) .although are con...

The different concern and issues of contemporary Indian agriculture, gave birth to varied new agriculture ideas of farming like organic farming, natural farming, biodynamic agriculture, and do- nothing farming and ecological agriculture, etc. Integrated use of organic and inorganic fertilizers can improve crop productivity, and encourages soil heal...

The seeds of wheat variety UP 2565 were invigorated with static magnetic fields of 100- and 200-mT intensities for 1 h and hydropriming for 16 h. Seedling vigour and enzyme activities of all invigorated seeds along with untreated control were conducted in the laboratory. Seedling vigour parameters were significantly higher in invigorated seeds than...

Right choice of the suitable substrate contributes a lot for successful flower production in container system. In order to select ideal substrates for lilium (Lilium longiflorum L.) forcing in container system, an experiment was conducted at Model Floriculture Centre, GBPUAT, Pantnagar during 2014-15. The bulbs were planted at spacing 15×10 cm² in...

Weed management is more demanding because weeds are rapidly becoming resistant to herbicides so a farmer prohibits use of herbicides. This has led the scientific community to use other management strategies such as crop cultivation in weed free condition or without competition. Generally, the interspecific competition (between plants of different s...

Phalaris minor is a highly competitive weed of wheat crop in India and can cause yield reductions of up to 100% (Chhokar et al. 2008). Isoproturon was recommended against P. minor in late 1980s which reduced huge losses in wheat and was largely accepted by the Indian farmers, due to its broadspectrum weed control and its selectivity with crops. Ext...

Herbicide resistance is a serious problem which affects the productivity of crop. Prolonged application of single herbicide in crop field can lead to development of herbicide resistance. Continuous use of isoproturon for over 15 years has evolved resistance to isoproturon. Herbicide resistance has now become widespread, with 234 cases reported thro...

The present investigation was carried out to understand the impact of dynamic interventions for programmed Lilium (Lilium longiflorum L.) production in container system at Model Floriculture Centre, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, India during 2014–15. The experiment was laid out in completely randomized desig...

Field experiments were conducted during two consecutive rabi seasons of 2012-13 and 2013-14 at Norman E. Borlaug Crop Research Centre, GBPUA & T Pantnagar, Uttarakhand to improve the late sown wheat productivity, profitability and irrigation water use efficiency (IWUE) through crop establishment methods, irrigation levels and chemical sprays. The e...

Human population is growing at an alarming pace and poses a threat to food and nutritional security, especially in developing countries. In countries, such as India, unpredictable climate and weather patterns lead to failure of major food crops frequently, including rice and wheat. Globally, almost 80% of our plant food supply comes from just 20 ki...

Seeds of chickpea (var. PG 114) were exposed to physical energy through static magnetic fields of 100 to 250 milli Tesla intensity with the intervals of 50 milli Tesla for 1-4 hour, and to metaphysical energy through BK Rajyog meditation (BKRYM, a positive thought energy based meditation) with an interval of 1 hour. Treatment of chickpea seeds thro...

Light is the main environmental factor which regula tes growth and development of crop plants. Decrease in light intensity due to shading adversely affects plant growth and development. The present study was conducted to analyze the effect of varying degree of shades on growth characteristics and yield of wheat crop. Two shading treatments were app...

The rapidly changing climate, due to global warming, is a major cause of concern for agriculture scientists. Undesirable climatic variability is bound to adversely affect the agricultural productivity, leading to food and nutritional insecurity for the burgeoning population. Therefore, one of the biggest challenges is to augment agricultural produc...

The effect of different elicitors and the precursor tryptamine on reserpine production in whole plant cultures of Rauwolfia serpentina was examined. The elicitors include dimethyl sulphoxide (DMSO), Abscisic acid (ABA) and Salicylic acid (SA). It was observed that ABA, SA and tryptamine stimulated reserpine production in the whole plant cultures of...

Light is the main environmental factor which regulates growth and development of crop plants. Decrease in light intensity due to shading adversely affects plant growth and development. The present study was conducted to analyze the effect of varying degree of shades on physiological characteristics and yield of wheat crop. Two shading treatments we...

Herbicidal effects of leaf oil from 3-Eucalyptus species (Eucalyptus citriodora, Eucalyptus camaldulensis and Eucalyptus tereticornis) were evaluated on germination and seedlings growth of Parthenium hysterophorus L. In laboratory bioassay the different concentrations of eucalyptus essential oils significantly reduced the seed germination. Based on...

Being sessile, plants are subjected to a diverse array of environmental stresses during their life span. Exposure of plants to environmental stresses results in the generation of reactive oxygen species (ROS). These activated oxygen species tend to oxidize various cellular biomolecules like proteins, nucleic acids, and lipids, a process that challe...

Rice production suffers a major setback through weed pressure world wide. The present investigation was carried out to analyse the rice plant characteristics associated with the competitiveness against weeds. The experiment was conducted for two years (2009 and 2010) in a split-plot design with the weedy and weed-free treatments in the main plot an...

Wheat [Triticum aestivum (L.) emend Fiori & Paol.], a major cereal of north India experiences high temperature during anthesis and grain development stages coupled with sharp irradiance, low humidity and moisture deficit, resulting in adverse effect on different vital activities and finally the yield and yield attributes of the crop. Wheat genotype...

In the present investigation, alkaloid profiling of Rauwolfia serpentina plant samples, including roots, leaves and callus, were performed which were collected from different localities. The CAF of samples suggest that roots are rich in alkaloid content as compared to leaves and callus. The maximum CAF was obtained from the in vitro regenerated roo...

Weed population was lower at all the doses of rice straw incorporated with the lowest in 500 g/m2 rice straw treatment. Data on weed dry weight recorded at 60 DAT revealed a significant decrease in all the plots where rice straw was incorporated as compared to weedy and butachlor treated plots.

Nitrogen is a crucial macronutrient needed in the greatest amount of all mineral elements required by plants. Development of crop varieties with high nitrogen use efficiency (NUE) is imperative for sustainable agriculture. Understanding how plant genes respond to different nitrogen conditions is essential for formulating approaches, for manipulatin...

Fruiting bodies of Cordyceps sinensis were collected from Pithoragarh District of Uttarakhand, India and mycelial cultures were isolated on Sabouraud's Dextrose Agar with Yeast Extract medium from fresh fruiting bodies and larvae cadavers. The medicinal properties of C. sinensis are known due to the presence of bio-active components. HPLC is one of...

Uniculm wheat (Triticum aestivum L.) was grown to maturity at four concentrations of nitrogen corresponding to 3 (N1), 6 (N2), 9 (N3) and 12 (N4) g m-2. Penultimate and flag leaves were examined throughout the ontogeny. Sub-optimal concentrations of N resulted in sharp decline in both area and dry mass of the leaves. Decline in leaf area was due to...

In four genotypes of chickpea (Cicer arietinum L.) BG 362, BG 372, BG 329 and C235 the relationship between somatic embryogenesis of leaf explants and ethylene and methane evolution was studied. In BG 362, which was more embryogenic than other genotypes, a higher ethylene:methane ratio of 5.8:1 at day one after inoculation in the induction medium a...

In four genotypes of chickpea (Cicer arietinum L.) BG 362, BG 372, BG 329 and C235 the relationship between somatic embryogenesis of leaf explants and ethylene and methane evolution was studied. In BG 362, which was more embryogenic than other genotypes, a higher ethylene:methane ratio of 5.8:1 at day one after inoculation in the induction medium a...

The article reports the physiological aspects of yield variation in short duration cultivars of rice. Rice cultivars have been compared on the basis of their yield performance under field conditions at the research field of the Odisha university of Agriculture and Technology, Bhubaneswar. Biomass production, yield components, physiological growth p...

Nitrogen (N) fertilisers encourage the formation of large, green, long lived leaves with large amounts of photosynthetic components. Leaves with high N content have a greater maximum rate of net photosynthesis and higher carboxylation efficiency than those deficient in N1,2. It has also been shown that enzymes of Calvin cycle and chlorophyll are cl...