Article

Concurrent growing of green manure with wet-seeded rice for cost-effective weed management

Authors:
To read the full-text of this research, you can request a copy directly from the authors.

No full-text available

Request Full-text Paper PDF

To read the full-text of this research,
you can request a copy directly from the authors.

... Spraying 2, 4-D with dhaincha reduced total weed count by 78% while reducing weed dry matter generation by 59%. The use of 2, 4-D to suppress dhaincha-controlled broadleaved weeds and sedges effectively (Anitha et al., 2012) [2] . Different herbicides altered weed density in transplanted rice, according to Shahbaz et al., (2018) [40] , and there were substantial differences at three locations during kharif 2015. ...
... Spraying 2, 4-D with dhaincha reduced total weed count by 78% while reducing weed dry matter generation by 59%. The use of 2, 4-D to suppress dhaincha-controlled broadleaved weeds and sedges effectively (Anitha et al., 2012) [2] . Different herbicides altered weed density in transplanted rice, according to Shahbaz et al., (2018) [40] , and there were substantial differences at three locations during kharif 2015. ...
Article
Full-text available
Rice is a staple food source for people all over the world. Weed growth in paddy fields, on the other hand, is a serious biological threat to increased rice yield and quality. Several cultural, chemical, biological, and physical strategies influence weed production and composition in paddy fields. In most circumstances, herbicides can effectively control weeds, however chemical-based weed management is not a long-term answer. The different weed kinds and their consequences on rice production are discussed in this article, as well as weed management approaches for suppressing weed development in rice fields. The essential arguments are that rice has a wide variety of weeds (grassy, sedges, and broad leaf), weeds cause crop losses, and weed management solutions are restricted. Researchers will be able to learn more about how to boost agricultural productivity and manage weeds in a sustainable manner because of this research.
... In comparison to DSR (sole), Sesbania or Azolla alone caused a considerable reduction in total weeds density and dry weight at 60 DAS. At 60 DAS, Azolla with 100% RDN reduced the total weed density to the extent of 81% ( Table 2), which could be due to the covered surface of rice field, reduces photosynthetic activity of weeds by intercepting light (Anitha et al. 2012). In this study, Azolla proved to be as effective as Sesbania in weed-suppressing ability. ...
Article
Full-text available
Azolla Direct-seeded rice Grain yield Sesbania Weed smothering efficiency
... This in turn results in higher yield for wheat, rice, maize, sorghum, sugar cane, etc. 4 . The concurrent growing of Sesbania with rice significantly reduces the count of grass, weeds and sedges in the field resulting in higher yield of rice due to increased nutrient uptake from soil in a competition free environment 7 . The other less important applications of Sesbania species in traditional agroforestry include as cover crop, shade plant, windbreak, live support fence, livestock feed, aquafeed, fibre, wood for light construction work and firewood 2,8,9 . ...
Article
Full-text available
Sesbania cannabina (Retz.) Pers. (Dhaincha) is a member of family Fabaceae spread over several countries in tropical and subtropical regions of the world. Sesbania aculeata, Sesbania drummondii, Sesbania grandiflora, Sesbania rostrata, Sesbania sesban, and Sesbania speciosa are other members of this family. The agricultural, nutritional and pharmaceutical applications of Sesbania species are known to farmers, villagers, and the tribes since ages and are well studied by researchers. However, the significance of Sesbania as an industrial crop has not been recognized till now. The objective of this study was extraction and characterization of Sesbania cannabina seed oil (SCSO) for potential engineering applications. The seed oil was extracted with hexane in a Soxhlet extractor. Yield was only 2.32% w/w due to long storage at high temperature in seed house. Sesbania cannabina seed oil methyl ester (SCSOME) was prepared via esterification and transesterification for analysis of fatty acid composition of extracted oil. SCSO has high iodine value (118 g I2/100 g) and high saponification value (185.79 mg KOH/g) making the oil suitable for use as candle stocks or in soap making. However, these applications were ruled out on account of being insignificant for oil available in limited quantity. The oil has high viscosity index (174.19), high onset (382°C) and offset (450°C) decomposition temperatures, endothermic nature, and shear rate thickening behaviour. These properties make SCSO a good candidate for application as specialty lubricant required under severe operating conditions of high temperature and high shear rate or as insulating and cooling transformer oil. graphical abstract Fullsize Image
... Incorporation of dhaincha by spraying 2, 4-D resulted in 78% reduction in total weed count and 59 % in weed dry matter production. Application of 2, 4-D for incorporation of dhaincha controlled broadleaved weeds and sedges substantially (Anitha et al., 2010). Shahbaz et al., (2018) found that the weed density was influenced by different herbicides in transplanted rice and showed significant differences at three locations during kharif 2015. ...
Article
Rice farming is generally practiced in warm/cool humid subtropics where lack of control over the water by both flooding and drought problems and serious weed infestation thus crop badly suffer. Worldwide, weeds are one of the major biological threats to higher rice productivity and its management in rice is challenging, complex, expensive, and regulated mechanism. Therefore, to control the diverse weed infestation in rice fields, planed weed management strategies have to addressed. Now a day, unavailability of labour due to seasonal migration and lack of farm operations in the peak of the rice growing period adds fossil to the burning complications “the profuse weed infestation” and hence, the precise weed removal/control is utmost required to optimize the yield sustainability and efficient resource use. Among all the weed control methods, chemical weed control is commonly used to overcome weeds infestation which is easy, quick, time saving, cost effective and the most reliable method to control weeds in rice. In view of the limitations of herbicidal resistance of old molecules, it is necessary to promote the potential new molecules of herbicides and their combination (a sustainable option in a long run) for effective weed control. Among the existing herbicides, pre emergence herbicides alone are extensively used for controlling the rice weeds which do not provide extended period of weed control. To control weeds during the critical period of crop weed and escape the development of resistance, a combination of different groups of herbicides having different mode of action to be applied. Integrated approaches for weed management, emphasizing on the combination of management practices and scientific knowledge, may also reduce the economic costs and improve weed control owing to the complexity of the weed community.
... Incorporation of dhaincha by spraying 2, 4-D resulted in 78% reduction in total weed count and 59 % in weed dry matter production. Application of 2, 4-D for incorporation of dhaincha controlled broadleaved weeds and sedges substantially (Anitha et al., 2010). Shahbaz et al., (2018) found that the weed density was influenced by different herbicides in transplanted rice and showed significant differences at three locations during kharif 2015. ...
... Incorporation of dhaincha by spraying 2, 4-D resulted in 78% reduction in total weed count and 59 % in weed dry matter production. Application of 2, 4-D for incorporation of dhaincha controlled broadleaved weeds and sedges substantially (Anitha et al., 2010). Shahbaz et al., (2018) found that the weed density was influenced by different herbicides in transplanted rice and showed significant differences at three locations during kharif 2015. ...
... This may be due to effective suppression of weed by live mulching resulting in reduced weed density, dry weight, as observed, and lower nutrient uptake by weeds. Anitha et al. (2012) also reported that dual cropping of cowpea with dry seeded rice resulted in a weed suppression by 69-75 % whereas, Mishra et al. (1995) concluded that cowpea live mulching in maize significantly reduced weed density and dry weight. Increased ground cover due to addition of cover crop under the treatment L 2 may have resulted in reduced weed growth leading to lower NPK uptake by weeds. ...
Article
Full-text available
Field investigations were conducted during 2015 and 2016 kharif seasons at the experimental farm of ICAR, Nagaland Centre, Medziphema to study weed growth and nutrient uptake in organically managed rice and maize as affected by N management and live mulching with cowpea. The experiment was laid out in factorial RBD with two kharif crops viz., rice (C1) and maize (C2), two organic N management viz., vermicompost @ 2 t/ha (N1) and vermicompost @ 2.7 t/ha (N2) and two mulches viz., control (No mulching) (L1) and live mulching with cowpea (L2). The dominant weed species observed were Cynodon dactylon, Digitaria setigera, Ageratum conyzoides, Amaranthus viridis, Cyperus iria and Cyperus rotundus. Weed density, dry weight and NPK uptake was found to be significantly lower in maize compared to rice during both years. Weed growth and NPK uptake was also found to be significantly higher with application of vermicompost @ 2.7 t/ha (N2) compared to 2 t/ha (N1) whereas, significantly lower weed growth as well as NPK uptake was also recorded with cowpea live mulch (L2) as compared to no mulching (L1). Cowpea live mulch (L2) with application of vermicompost @ 2 t/ha (N1) was found to record significantly lower NPK uptake by weeds in both crops. Yield and yield attributes of rice and maize were observed to be higher under cowpea live mulch with application of vermicompost @ 2.7 t/ha (N2).
Chapter
Full-text available
Green manuring is considered to be a good management practice in all agricultural production systems because of its increasing sustainability cropping system through reducing soil erosion, improving soil physical properties, increasing soil organic matter and fertility level, especially nitrogen. Furthermore, the crop rotation through the green manures use are between the key mechanisms for more effective soil nutrient cycling that are so critical to soil productivity, and so, essential to the sustainability development of low-input and organic farming systems around the world. The cultivation of green manures, notably the legumes, the gives the farmer certain autonomy in relation to the availability of organic matter and has a role in management of soil fertility under the low-input resource management conditions. The legume family of have an advantage due to their symbiotic associations with N2 fixing bacteria, resulting in the contribution of considerable amounts of that nutrient to the soil-plant system, which can be available in subsequent cultivations. In addition, principal issues as soil organic matter management in different cropping areas for improving soil health and residues management concerning recycling and environmental protection need to be addressed in future. Therefore, due to the high soil conservation efficiency provided by the plant covering of green manures, there is the possibility of high biomass contribution to the cultivated areas.
Article
Full-text available
White clover (Trifolium repens L.) and ryegrass (Lolium multiflorum L.) are widely used cover crops. This experiment investigated the potential of white clover (WC), ryegrass (RG), and fallow (FL) to inhibit the growth of weeds and the effect of their residue return to the field on subsequent crops in a cover crop-corn rotation system. Furthermore, we designed pot experiments to guide the scientific application of WC and RG. The results showed that the FL treatment had the highest mean weed biomass in two years (11.99 t ha−1) and the RG treatment recorded the lowest mean weed biomass in two years (2.04 t ha−1) as its early growth rate and aerial root cover. The combination of rotary tillage (RT) and WC recorded the highest total corn yield in two years (20.20 t ha−1) and an increase of 2.84% in the two-year average biomass of weeds compared to RT-FL. Compared to RT-FL, RT-RG treatments inhibited weed invasion by an average of 73%, but corn yield was reduced by 3.25%. Straw and soil ratios above 6:100 for RG resulted in stunted corn growth, including a reduction in fresh weight and chlorophyll content, and impaired photosynthesis, but this effect was not evident in WC treatment. From an ecological point of view, this study recommends RT-RG as a pre-crop for corn to reduce herbicide use.
ResearchGate has not been able to resolve any references for this publication.