Potato tuber yield and quality in response to different nitrogen fertilizer application rates under two split doses in an irrigated sandy loam soil

2019 ◽  
Vol 42 (15) ◽  
pp. 1850-1860 ◽  
Author(s):  
C. M. Ayyub ◽  
Muhammad Wasim Haidar ◽  
Faisal Zulfiqar ◽  
Zainul Abideen ◽  
Shawn R. Wright
Keyword(s):  
Potato Tuber ◽  
Nitrogen Fertilizer ◽  
Tuber Yield ◽  
Sandy Loam ◽  
Fertilizer Application ◽  
Sandy Loam Soil ◽  
Yield And Quality ◽  
Application Rates ◽  
Loam Soil

INFLUENCE OF FORM AND MODE OF NITROGEN FERTILIZER APPLICATION ON THE AVAILABILITY OF SOIL AND FERTILIZER POTASSIUM

1966 ◽  
Vol 46 (1) ◽  
pp. 23-28 ◽  
Author(s):  
D. K. Acquaye ◽  
A. J. MacLean
Keyword(s):  
Nitrogen Fertilizer ◽  
Sandy Loam ◽  
Fertilizer Application ◽  
Inhibitory Effect ◽  
Sandy Loam Soil ◽  
Chemical Extraction ◽  
K Uptake ◽  
Exchangeable K ◽  
K Fertilizer ◽  
Loam Soil

Ammonium applied alone or after addition of K depressed the uptake of K by oats grown in a sandy loam soil in the greenhouse. When NH4 was added first and K later at seeding, however, NH4 increased K-uptake.In the absence of K fertilizer, NH4 reduced the release of non-exchangeable K to the plants. When added prior to or at the same time as K at seeding, NH4 reduced K-fixation. This inhibitory effect of NH4 on fixation of added K was reflected in higher amounts of K in solution as shown by lower [Formula: see text] ratios. These results of chemical extraction of the soil indicated that the effects of NH4 on K-uptake by the oat crop arose from reactions in the soil.

scholarly journals Agronomical Field Testing of New Kinds of Multicomponent Mineral Fertilizers

2014 ◽  
Vol 17 (1) ◽  
pp. 79
Author(s):  
K.T. Zhantasov ◽  
Z.U. Myrhalykov ◽  
S.M. Moldabekov ◽  
M.K. Zhantasov ◽  
B.T. Omarov ◽  
...  
Keyword(s):  
Sandy Loam ◽  
Mineral Fertilizer ◽  
Field Testing ◽  
Fertilizer Application ◽  
Sandy Loam Soil ◽  
Mineral Fertilizers ◽  
Essential Difference ◽  
Loam Soil ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Analysis of modern scientific literature and patents has shown the absence of acid-free production technology of a mechanically activated multicomponent mineral fertilizer containing water-holding substances. Experimental researches connecting with mechanochemical activation and physicochemical properties of Karatau phosphorites prove a possibility of development of a new multicomponent mineral fertilizer. Application of inorganic and organic activators considerably improves qualities of fertilizers because the developed fertilizer mixtures contain nitrogen, phosphorus, potassium, humate and microelements. The suggested technology intends to use wastes of coal mining that leads to presence of humates and microelements in the end product. It was determined, that content of total nitrogen, phosphorus and potassium depends on a form of nitrogen-phosphorus-potassium-containing substances. The given article contains data of researches connecting with use of multicomponent mineral fertilizers in field conditions for cotton cultivation on irrigated light sierozems consisting of soil-forming rocks of loess and loess-type clay loams. The research results show the increase of soil’s fertility and cotton’s productivity. Studying of agronomic efficiency of the new kinds of mechanically activated multicomponent mineral fertilizers at the cultivation of a bean-cereal mixture has been carried out in the Negorelsk experimental nursery-garden of the Belarus State Technical University on a sod-podzol sandy-loam soil and has shown the essential influence on productivity and quality of the bean-cereal mixture. The researches fulfilled on a sod-podzol sandy-loam soil have revealed the essential increase of key indicators of feed productivity. Application of the mineral fertilizers has promoted increase of nitrogen, phosphorus and potassium content in green plants. In so doing content of calcium and magnesium in green mass depends from quantity of the fertilizer used to a smaller extent. An essential difference of crop capacity and feed productivity indicators depending on forms of the applied mineral fertilizers has not been found.

Changes in the functional properties of a sandy loam soil amended with biosolids at different application rates

Geoderma ◽  
2014 ◽  
Vol 221-222 ◽  
pp. 40-49 ◽  
Author(s):  
Luigi Sciubba ◽  
Luciano Cavani ◽  
Andrea Negroni ◽  
Giulio Zanaroli ◽  
Fabio Fava ◽  
...  
Keyword(s):  
Functional Properties ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Application Rates ◽  
Loam Soil

scholarly journals Nitrate and potassium movement in a sandy loam soil cultivated with fertigated grapevine (Vitis vinifera /L.) in the Brazilian semiarid

2018 ◽  
Vol 40 (5) ◽  
Author(s):  
Alexsandro Oliveira da Silva ◽  
Luis Henrique Bassoi ◽  
Davi José Silva
Keyword(s):  
Soil Solution ◽  
Nitrogen Fertilization ◽  
Sandy Loam ◽  
Water Flux ◽  
Fertilizer Application ◽  
Sandy Loam Soil ◽  
Vitis Vinifera L ◽  
Growing Seasons ◽  
Brazilian Semiarid ◽  
Loam Soil

Abstract Fertigation can increase the efficiency of fertilizer application and facilitate the nutritional management of a crop. Thus, nitrate and potassium movements in a sandy loam soil were evaluated as function of fertilizer doses during three growing seasons of the grapevine cv. Syrah grafted on Paulsen 1103 rootstock (June to October 2013, February to June 2014, and August to November 2014) in Petrolina, state of Pernambuco, Brazil. Five doses of N (0, 15, 30, 60 and 120 kg ha-1) and five doses of K2O (0, 15, 30, 60 and 120 kg ha-1) were combined in a fractional 52 factorial design, totaling 13 combinations, in a randomized blocks experiment with four replications. The concentrations of nitrate and potassium in the soil solution were determined. Samples were collected by porous cup extractors installed at 0.4 and 0.6 m depths. The movement of these ions was obtained by the product between their concentration in the soil solution and the soil water flux density. The increase in nitrogen fertilization promoted a greater movement of NO3- (62.2 kg ha-1) in the soil. The movement of K+ was also observed in two growing seasons .

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