scholarly journals Yield of sugar beet and changes in phosphorus fractions in relation to long term P fertilization in chestnut soil of Kazakhstan

2022 ◽  
Vol 11 (1) ◽  
pp. 25-32
Author(s):  
Gulzhan ZHAKSYBAYEVA ◽  
Alimbay BALGABAYEV ◽  
Tursunay VASSİLİNA ◽  
Aigerim SHİBİKEYEVA ◽  
Almagul MALİMBAYEVA
Keyword(s):  
Sugar Beet ◽  
Chestnut Soil ◽  
Phosphorus Fractions ◽  
P Fertilization

scholarly journals IOT process for sugar beet productivity by long-term use of phosphorus fertilisers on irrigated light chestnut soil

2021 ◽  
Vol 17 (2/4) ◽  
pp. 1
Author(s):  
Yerkin Suleimenov ◽  
Gulzhan Zhaksybayeva ◽  
Amangeldy Umbetov ◽  
Alimbay Balgabayev ◽  
Aigerim Shibikeyeva
Keyword(s):  
Sugar Beet ◽  
Chestnut Soil ◽  
Light Chestnut Soil

Soil phosphorous accumulation in long-term P fertilization paddy field and its environmental effects

2013 ◽  
Vol 21 (4) ◽  
pp. 393
Author(s):  
Xiao YAN ◽  
De-Jian WANG ◽  
Gang ZHANG ◽  
Lu-Ji BO ◽  
Xiao-Lan PENG
Keyword(s):  
Environmental Effects ◽  
Paddy Field ◽  
P Fertilization ◽  
Soil Phosphorous

Response of phosphorus fractions to land-use change followed by long-term fertilization in a sub-alpine humid soil of Qinghai–Tibet plateau

2018 ◽  
Vol 19 (3) ◽  
pp. 1109-1119 ◽  
Author(s):  
Xiaolei Sun ◽  
Meng Li ◽  
Guoxi Wang ◽  
Marios Drosos ◽  
Fulai Liu ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Phosphorus Fractions ◽  
Tibet Plateau ◽  
Qinghai Tibet Plateau

scholarly journals Soil phosphorus availability and soybean response to phosphorus starter fertilizer

2014 ◽  
Vol 38 (5) ◽  
pp. 1487-1495 ◽  
Author(s):  
Ciro Antonio Rosolem ◽  
Alexandre Merlin
Keyword(s):  
Soil Phosphorus ◽  
Soil Surface ◽  
Tropical Soils ◽  
P Fertilization ◽  
Soil P ◽  
Brachiaria Ruziziensis ◽  
Soluble P ◽  
Surface Spread ◽  
P Sources

Phosphorus fixation in tropical soils may decrease under no-till. In this case, P fertilizer could be surface-spread, which would improve farm operations by decreasing the time spend in reloading the planter with fertilizers. In the long term, less soluble P sources could be viable. In this experiment, the effect of surface-broadcast P fertilization with both soluble and reactive phosphates on soil P forms and availability to soybean was studied with or without fertilization with soluble P in the planting furrow in a long-term experiment in which soybean was grown in rotation with Ruzigrass (Brachiaria ruziziensis). No P or 80 kg ha-1 of P2O5 in the form of triple superphosphate or Arad reactive rock phosphate was applied on the surface of a soil with variable P fertilization history. Soil samples were taken to a depth of 60 cm and soil P was fractionated. Soybean was grown with 0, 30, and 60 kg ha-1 of P2O5 in the form of triple phosphate applied in the seed furrow. Both fertilizers applied increased available P in the uppermost soil layers and the moderately labile organic and inorganic forms of P in the soil profile, probably as result of root decay. Soybean responded to phosphates applied on the soil surface or in the seed furrow; however, application of soluble P in the seed furrow should not be discarded. In tropical soils with a history of P fertilization, soluble P sources may be substituted for natural reactive phosphates broadcast on the surface. The planting operation may be facilitated through reduction in the rate of P applied in the planting furrow in relation to the rates currently applied.

scholarly journals Effect of EPSPS Gene Copy Number and Glyphosate Selection on Fitness of Glyphosate-Resistant Bassia Scoparia in The Field

2021 ◽  
Author(s):  
Charlemagne Ajoc Lim ◽  
Prashant Jha ◽  
Vipan Kumar ◽  
Alan T. Dyer
Keyword(s):  
Sugar Beet ◽  
Seed Production ◽  
Great Plains ◽  
Copy Number ◽  
Gene Copy Number ◽  
Reproductive Traits ◽  
Gene Copy ◽  
Epsps Gene ◽  
Gene Copies

Abstract The widespread evolution of glyphosate-resistant (GR) Bassia scoparia in the U.S. Great Plains poses a serious threat to the long-term sustainability of GR sugar beet. Glyphosate resistance in B. scoparia is due to an increase in the EPSPS (5-enolpyruvyl-shikimate-3-phosphate) gene copy number. The variation in EPSPS gene copies among individuals from within a single GR B. scoparia population indicated a differential response to glyphosate selection. We tested the hypothesis of reduced GR B. scoparia fitness (reproductive traits) to increasing glyphosate rates (applied as single or sequential applications) potentially experienced within a GR sugar beet field. The variation in EPSPS gene copy number and total glyphosate rate (single or sequential applications) did not influence any of the reproductive traits of GR B. scoparia, except seed production. Sequential applications of glyphosate with a total rate of 2,214 g ae ha− 1 or higher prevented seed production in B. scoparia plants with 2–4 (low levels of resistance) and 5–6 (moderate levels of resistance) EPSPS gene copies. Timely sequential applications of glyphosate (full recommended rates) can potentially slow down the evolution of GR B. scoparia with low to moderate levels of resistance (2–6 EPSPS gene copies), but any survivors (highly-resistant individuals with ≥ 8 EPSPS gene copies) need to be mechanically removed before flowering from GR sugar beet fields. This research warrants the need to adopt ecologically based, multi-tactic strategies to reduce exposure of B. scoparia to glyphosate in GR sugar beet.

scholarly journals Long-term excessive phosphorus fertilization alters soil phosphorus fractions in the acidic soil of pomelo orchards

2022 ◽  
Vol 215 ◽  
pp. 105214
Author(s):  
Xiaohui Chen ◽  
Xiaojun Yan ◽  
Mingkuang Wang ◽  
Yuanyang Cai ◽  
Xuefan Weng ◽  
...  
Keyword(s):  
Soil Phosphorus ◽  
Phosphorus Fractions ◽  
Acidic Soil ◽  
Phosphorus Fertilization ◽  
Soil Phosphorus Fractions

scholarly journals Agro-economic substantiation of the feasibility of green manured fallow in sugar beet crop rotations of the Central Chernozem Region

2021 ◽  
Vol 32 ◽  
pp. 02001
Author(s):  
Alexander Akimenko ◽  
Vyacheslav Sviridov ◽  
Tatiana Dudkina
Keyword(s):  
Sugar Beet ◽  
Crop Rotation ◽  
Crop Rotations ◽  
Mineral Fertilizers ◽  
Typical Chernozem ◽  
Central Chernozem Region ◽  
Sugar Beet Crop ◽  
Absolute Decrease ◽  
Central Chernozem

The aim of the study is to find out the feasibility of including green manured fallow in specialized sugar beet crop rotations by comparing necessary assessment indicators with their values in a traditional crop rotation with black fallow against the background of unequal fertilization levels. The study was based on the analysis of experimental data from a long-term stationary experiment, laid out simultaneously in all fields and variants on typical chernozem in triplicate. The results are as follows: within the same fertilization levels, no significant differences in the yield of winter wheat (sugar beet precursor) were revealed, and the yield of sugar beet in a crop rotation with green manured fallow was stably higher (no more than 5 to 7%), an increase in yield relative to the control fertilizer variant (6 tons of manure per hectare per year) against the background of a double rate of manure in combination with mineral fertilizers amounted to 21.7 to 23.4% for wheat and 14.3 to 15.6% for beets with an increase in the productivity of crop rotations (in natural and value terms) by 1.2 times, but an increase in costs by 1.3 times caused an absolute decrease in the level of profitability by 23 to 25%. Differences in the assessment indicators for specific fertilization variants increased over time due to an unequal degree of soil fertility reproduction, and therefore in the fifth cycle of the crop rotation with black fallow turned out to be 1.1 to 1.3 times greater than in the green manured rotation.

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