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Title
Abstract
Introduction
Materials and Methods
Soil Sample Analysis
Experimental Design
Plant Sampling and Analysis
Statistical Analysis
Results
Discussion
Conclusions
References
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Chemistry

Potato Phosphorus Response in Soils with High Value of Phosphorus

Profile image of ahmed jasimahmed jasim

Agriculture

https://doi.org/10.3390/AGRICULTURE10070264
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Abstract

Phosphorus (P) is an element that is potatoes require in large amounts. Soil pH is a crucial factor impacting phosphorus availability in potato production. This study was conducted to evaluate the influence of P application rates on the P efficiency for tuber yield, specific gravity, and P uptake. Additionally, the relationship between soil pH and total potato tuber yield was determined. Six rates of P fertilization (0–280 kg P ha−1) were applied at twelve different sites across Northern Maine. Yield parameters were not responsive to P application rates. However, regression analysis showed that soil pH was significantly correlated with total potato tuber yield(R2 = 0.38). Sites with soil pH values < 6 had total tuber yields, marketable tuber yields, tuber numbers per plant, and total tuber mean weights that were all higher than these same parameters at sites with soil pH ≥ 6. All sites with soil pH< 6 showed a highly correlated relationship between P uptake and petiole dry wei...

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    Ashenafi Haile

    Journal of Agriculture and Food Research

    In a time of extremely high population growth, loss of arable land and climate change effects, food security issue is becoming more and more important. Thus, improving the food security of smallholder farmer is a major concern particularly in developing country. In this regard potato is one of the important cash crops which contributes for food security and reduce poverty among smallholder farmers in the developing countries like Ethiopia. However, the productivity of the crops is constrained by the limitation of soil macronutrient. Therefore, this research was conducted with the aim to improve potato productivity through intensive and economical uses of soil macronutrients. A factorial combination of four soil macro nutrients and three potato varieties were used in a Randomized Complete Block Design with three replications. The result revealed that soil macronutrients and potato variety had signi cantly in uenced on phenology and growth components. Interaction effects of soil macro-nutrients and variety had also signi cantly affected total and marketable tuber yield of potato. The marginal rate of return of 7,370% was obtained from the Wabi variety with the application of 200 kg ha − 1 soil macro-nutrients (NPS fertilizer). Therefore, growing the Wabi variety of potato at 200 kg/ha of soil macro-nutrients resulted in a high productivity and economic returns of the crop.

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    Cell-Free Supernatant (CFS) from Bacillus subtilis EB2004S and Lactobacillus helveticus EL2006H Cultured at a Range of pH Levels Modulates Potato Plant Growth under Greenhouse Conditions
    Sowmyalakshmi Subramanian

    International Journal of Molecular Sciences

    Agriculture involving industrial fertilizers is another major human made contributing factor to soil pH variation after natural factors such as soil parent rock, weathering time span, climate, and vegetation. The current study assessed the potential effect of cell-free supernatant (CFS) obtained from Bacillus subtilis EB2004S and Lactobacillus helveticus EL2006H cultured at three pH levels (5, 7, and 8) on potato (var Goldrush) growth enhancement in a greenhouse pot experiment. The results showed that CFSs obtained from B. subtilis EB2004S and L. helveticus EL2006H cultured at pH 5 significantly improved photosynthetic rates, stomatal conductance, root fresh weight, and whole plant fresh weight. interactive effects of pot pH and that of CFSs obtained from pH 5 influenced chlorophyll, plant height, and shoot and whole plant fresh weight. Moreover, treatment 52EB2004S~0.4% initiated early tuberization for potato grown at pH 7 and 8. Potato grown at pH 5, which received a 72EB2004S~0.4...

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