Effects of P, Ca with four k levels on nodule histology, nitrogenase activity and improved 'Spanco'; peanut yields

Autor:	J. Q. Lynd, T.R. Ansman
Rok vydání:	1989
Předmět:	Physiology Potassium Phosphorus food and beverages Nitrogenase chemistry.chemical_element Biology biology.organism_classification Animal science chemistry Agronomy Loam Alfisol Soil fertility Mycorrhiza Phycomycetes Agronomy and Crop Science
Zdroj:	Journal of Plant Nutrition. 12:65-84
ISSN:	1532-4087 0190-4167
DOI:	10.1080/01904168909363936
Popis:	Soil fertility with effective nodulation and favorable mycorrhizal colonization favor production of high quality, sound mature peanuts within the warm humid and tropical regions of the world. Total top growth of well nodulated and mycorrhizal infected Spanco peanuts, grown on Dougherty sand loam, was depressed with only soil K additions but increased linearly with increased K amendment when combined with P + Ca. Mature peanut yields plant‐1 increased with K additions only when combined with P, Ca or P + Ca treatments. Highly significant linear increases of improved marketable, mycotoxin free, sound mature kernels (SMK) resulted with K additions when combined with P and Ca. Nodules plant‐1 increased significantly with Ca, P and P + Ca. Nitro‐genase = 1.7 top growth + 3.69 nut yield + 1.12% SMK + 3.89 nodules, R2 = 0.78 and C.V. = 13.2%. Plant nutrient content of nodule cytosol increased significantly with soil addition of the corresponding element. Na decreased significantly with increased K. Nitr...
Databáze:	OpenAIRE
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