Results 31 to 40 of about 482,952 (310)

Effects of different phosphorus and potassium fertilization on contents and uptake of macronutrients (N, P, K, Ca, Mg) in winter wheat II Uptake of macronutrients [PDF]

Journal of Central European Agriculture, 2014
The aim of this study was the assessment of macronutrient (N, P, K, Ca, Mg) accumulation in wheat at the critical phases of yield shaping as well as at the full ripening stage when judged at optimal P and K fertilizer rates applied as well as at reduced ...
Renata GAJ, Katarzyna REBARZ
doaj   +1 more source

Decision support for optimised irrigation scheduling [PDF]

, 2009
The system, developed under the FLOW-AID (an FP6 project), is a farm level water management system of special value in situations where the water availability and quality is limited.
Anastasiou, A., Kempkes, F.L.K., Pasgianos, G., Sawas, D., Sigrimis, N., Stanghellini, C.   +5 more
core   +2 more sources

Effects of Water and Fertilizer Treatment on Nutrient Uptake and Yield of Chinese Flowering Cabbage under Coconut Chaff Cultivation

Guangdong nongye kexue, 2023
【Objective】The study aimed to investigate the effects of water and fertilizer on nutrient uptake and yield of Chinese flowering cabbage under coconut chaff cultivation, with a view to providing guidance on water and fertilizer management for Chinese ...
Xin YANG, Jun NIE, Yanhong LI, Changyuan ZHANG, Yuming XIE, Liangliang SHI, Jinrong ZHENG   +6 more
doaj   +1 more source

Effect of influent nutrient ratios and hydraulic retention time (HRT) on simultaneous phosphorus and nitrogen removal in a two-sludge sequencing batch reactor process [PDF]

, 2009
A laboratory-scale anaerobic–anoxic/nitrification sequencing batch reactor (A2N- SBR) fed with domestic wastewater was operated to examine the effect of varying ratios of influent COD/P, COD/TN and TN/P on the nutrient removal.
Peng, Yongzhen, Stephenson, Tom, Wang, Yayi   +2 more
core   +1 more source

Modelling Water and Nutrient Uptake

, 2000
Supplying plants with inorganic nutrients and water is a major function of roots (Nye and Tinker 1977; Nielsen 1983; Barber 1984; Jungk and Claassen 1989; Gahoonia and Nielsen 1991, 1992a,b). It is still a major challenge to agricultural research to quantitatively predict production of a crop as influenced by uptake of nutrients and water.
de Willigen, P., Nielsen, N.E., Claassen, N., Castrignan, A.M.   +3 more
openaire   +3 more sources

Comparing the Nutritional Needs of Two Solanaceae and One Cucurbitaceae Species Grown Hydroponically under the Same Cropping Conditions

Plants, 2023
Switching over to closed-loop soilless culture systems, thus preventing pollution of water resources by nitrates and saving water and fertilizers, requires accurate estimations of the mean nutrient-to-water uptake ratios. To contribute to this objective,
Eirini Xaxiri, Evangelos Darivakis, Ioannis Karavidas, Georgia Ntatsi, Dimitrios Savvas   +4 more
doaj   +1 more source

Dataset from an investigation of the effect of natural zeolite particle size reduction as a material for the manufacture of slow-release potassium fertilizer in oil palm seedlings growth with peat soil planting media

Data in Brief
Particle size is one-factor influencing zeolite's ion exchange properties. This study used natural zeolite with a particle size of ±0.147 mm and ±500 nm as a carrier for K-zeolite-based fertilizer.
Eko Noviandi Ginting, Syaiful Anwar, Budi Nugroho, Suroso Rahutomo   +3 more
doaj   +1 more source

Plant growth-promoting rhizobacteria induce changes in Arabidopsis thaliana gene expression of nitrate and ammonium uptake genes

Journal of Plant Interactions, 2019
Plant growth-promoting rhizobacteria (PGPR) enhance plant growth under the influence of multigenic processes, including nitrate ( ${\rm NO}_3^-$) and ammonium ( ${\rm NH}_4^ +$) uptake genes, which could potentially explain the improvement in plant ...
Pamela Calvo, Simon Zebelo, David McNear, Joseph Kloepper, Henry Fadamiro   +4 more
doaj   +1 more source

Reducing nutrient loss in drainage from tomato grown in free-draining substrate in greenhouses using dynamic nutrient management

Agricultural Water Management, 2023
Substrate-grown crops represent approximately 10% of the cropping area of intensive greenhouse horticulture in southern Spain. The vast majority are free draining, in that they do not collect and recirculate drainage.
J. Cedeño, J.J. Magán, R.B. Thompson, M.D. Fernández, M. Gallardo   +4 more
doaj   +1 more source

QUEFTS Model-based Estimation of the Nutrient Requirements and Fertilizer Recommendation for Chinese Onion

HortScience, 2022
Accurate estimation of the nutrient requirements of Chinese onion is essential to increase its nutrient utilization efficiency and yield. In this study, the yield and nutrient uptake data were collected from major Chinese onion growing regions during ...
Jianlin Wei, Shutian Li, Ping He, Xinpeng Xu, Deshui Tan, Yan Li, Guosheng Li, Yuesheng Guo, Rongzong Cui   +8 more
doaj   +1 more source