Kholik Allanov

• Professor
• Profess (DSc) at Tashkent State Agrarian University

Many soils of Uzbekistan have low water and nutrient holding capacity because of their sandy texture, low organic matter concentrations and degradation caused by long years of cotton monoculture. Conservation tillage production systems have the potential to increase the productivity of these soils by increasing soil humus and nitrogen content. As p...

Crop productivity and soil fertility in arid area are influenced by tillage and crop rotation management. A field experiment was conducted during 2007-2010 at farmers’ field located in Jizzakh region, Uzbekistan. The experiments consisted of three rotations: i) cotton-wheat-fallow (farmers' practice) ii) cotton-wheat-soybean and iii) cotton-whea...

Improved nutrient-use efficiency is important to sustain agricultural production. The goal of our study was to investigate the effects of Azovit� (Azotobacter chroococcum) inoculation of seed with N fertilization on crop yield, nutrient uptake, and N-use efficiency (NUE) of irrigated cotton (Gossypium hirsutum L. cv. C-6524) in secondary saline soi...

Crop production in arid regions is characterized with high temperature, drought and salinity which decrease water and nutrient use efficiency. This study was conducted to investigate the effect of wheat residue mulch in relation to N fertilizer application rates for cotton productivity under dry-land condition of Uzbekistan. Main plots were control...

The effects of chemical fertilizers on crop growth and grain yield are relatively well-known, but little is known about their synergistic effects with foliar nutrition. The factorial experiment was conducted using a strip-plot design. The main plots consisted of three chemical fertilization treatments at the following rates: N150P105K75, N180P125K9...

Since silicon (Si) was found to be effective in crop production recently, more information is needed about its characteristics, including how it functions as a nano fertilizer for crop performance. Therefore, this study aimed to evaluate the impact of the Si-containing nano fertilizer on cotton growth parameters and productivity in the arid region....

Ushbu darslik kursida O'zbekistonning lalmikor yerlaridan samarali foydalanishda: lalmikor dehqonchilikni rivojlanish tarixi va davrlarini, ahamiyatini, lalmikor hududlarning tuproq iqlim sharoitlarini, ushbu hududlarda o'simliklarning o'sishi hamda rivojlanishida yorug'lik, issiqlik va foydali haroratning tutgan o'rnini, o'simliklarni oziqlanish...

Soil salinity has enormous negative impact on crop productivity leading to food insecurity and malnutrition, especially in arid regions. The aim of this study was to elucidate the interactive effects of different N fertilization rates and Bradyrhizobium japonicum (Kirchner) on agronomic traits of soybean [Glycine max (L.) Merr.] in saline soils (EC...

The world’s population is increasing by an average of 80 million people per year, in 2025 there will be 8 billion people on the planet. The population of the Republic of Uzbekistan is increasing by 650-670 thousand people per year, it will reach 47 million by 2026. This research was aimed at developing a scientifically based system of organic ferti...

Land degradation is a serious problem in arid regions, including in Central Asian countries. Soybean symbiosis with rhizobia microbes has an essential role in improving crop productivity and sustaining soil fertility in an arid environment. An experiment was conducted in light straw-colored sierozem soils in the Syrdarya region of Uzbekistan (41.4°...

Annotation The article discusses the composition and suitability of wastewater from poultry farms, their suitability for irrigation purposes of cotton variety C-6524 in the meadow soils of Tashkent region, the impact of wastewater use on the growth and productivity of cotton. Wastewater is characterized by a slightly alkaline reaction (pH = 7.1-7.3...

Water deficiency restricts plant productivity, while excessive soil moisture may also have an adverse impact. In light of this background, field trials were conducted in secondary saline soil (EC 6.5 dS m−1 ) at the experimental station of Tashkent State Agrarian University (TSAU), Uzbekistan to determine drought tolerance of licorice (Glycyrrhiza...

Water deficiency restricts plant productivity, while excessive soil moisture may also have an adverse impact. In light of this background, field trials were conducted in secondary saline soil (EC 6.5 dS m−1) at the experimental station of Tashkent State Agrarian University (TSAU), Uzbekistan to determine drought tolerance of licorice (Glycyrrhiza g...

Information is provided on the timing of irrigation, feeding standards, growth and development, productivity and economic indicators of fine-fiber cotton varieties in the conditions of grazing lands of Kashkadarya region. Given that the economic benefits of growing fine-fiber cotton will be at least 1.5 times higher, it is possible to achieve an im...

This article discusses the viro of growing amaranth in stees conditions in Uzbekistan, lack of water, population, studied varieties and samples of amaranth at optimal and late planting times and the influence of temperatures on seed yield.

The impact of irrigation and nutrition application scheduling as well as plant density on boll weight of long staple cotton varieties in the condition of takyr soils of Kashkadarya province with transition to meadow type were presented in article

Climate resilience of the C3 halophyteChenopodium quinoaWilld potentiates its production in drought and salt-prone areas. A two-year field experiment was laid out in completely randomized block designs with three replications to test the adaptability of this crop to abiotic stresses, grain yield and nutritional quality in marginal areas of the Aral...

In this paper, it is given data about experiment conditions, its results, namely when the experiment was carried out In Kashkadarya region, the indicators of limited field moisture capacity in the cultivation of fine-fiber cotton varieties, the parametres of soil averaged 22.2-22.5, 21.4-21.8% in 0-70, 0-100 cm layers of soil in two years, compared...

The influence of irrigation and nutrition application scheduling and plant density on water productivity of long staple cotton variteis in the condition of Kashkardarya and Surkhandarya provences were presented in article. Мақолада суғориш ва озиқланишни режалаштириш ва ўсимликларнинг зичлиги узун толалаи пахта навларининг Қашқадарё ва Сурхандарё...

The paper presents the influence of the production agrotechnology elements on boll weight of long staple cotton varieties in the condition of takyr soils of Kashkadarya province with transiton to meadow type.

Water shortage is a major challenge for cotton production in Uzbekistan, substantially deteriorating crop growth and yield. Two-year field studies in a split-plot design were conducted at the experimental station of Cotton Research Institute located in Kashkadarya region, Uzbekistan to investigate the response of cotton to different chemical fertil...

The optimal irrigation scheduling Fc, mineral fertilizer application rates as well as plant densities of long-staple cotton varities in southern zone of Uzbekistan were presented in article.

Crop production in arid regions is characterized with high temperature, drought and salinity which decrease water and nutrient use efficiency. This study was conducted to investigate the effect of wheat residue mulch in relation to N fertilizer application rates for cotton productivity under dryland condition of Uzbekistan. Main plots were control...

Crop productivity and soil fertility in arid area are influenced by tillage and crop rotation management. A field experiment was conducted during 2007-2010 at farmers' field located in Jizzakh region, Uzbekistan. The experiments consisted of three rotations: i) cotton-wheat-fallow (farmers' practice) ii) cotton-wheat-soybean and iii) cotton-wheat-m...