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Research on Crops

Influence of irrigation intervals on essential nutrient content in okra (Abelmoschus esculentus) seeds

DOI: 10.31830/2348-7542.2024.ROC-1122    | Article Id: ROC-1122 | Page : 618-625
Citation :- Influence of irrigation intervals on essential nutrient content in okra (Abelmoschus esculentus) seeds. Res. Crop. 25: 618-625
NDIVHUHO MUTSHEKWA, MABOKO S. MPHOSI AND HAPPY BANGO mutshekwan@gmail.com
Address : University of Limpopo, Green Biotechnologies Research Centre of Excellence, Private Bag X1106, Sovenga 0727, South Africa
Submitted Date : 21-08-2024
Accepted Date : 15-10-2024
Online Published:

Abstract

The influence of irrigation intervals on the accumulation of essential nutrients in okra seeds, especially those intended for coffee production, has not been thoroughly documented. This study aimed to investigate the effects of irrigation intervals on essential nutrient levels in okra seeds. By exploring how different irrigation schedules impact nutrient content, this research aims to optimize water use and enhance seed quality to meet the growing demand for nutrient-dense food products. The present study was conducted during late summer (December-January) 2022 and validated in 2023 at the Green Biotechnologies Research Centre of Excellence (GBRCE), University of Limpopo, Limpopo Province, South Africa (23°53'10"S, 29°44'15"E). Okra seedlings were subjected to irrigation intervals of 2, 4, 6, 8, 10, 12, and 14 days, with each interval replicated 10 times. Each seedling received 2,000 mL of tap water per irrigation. At 59 days after transplanting, pods were harvested and shelled, with seed samples prepared for the determination of malnutrition essential element tests. Calcium, K, Mg, and P versus irrigation interval exhibited quadratic relations with the model explained by 80, 78, 79, and 77% associations, respectively. Similarly, Cu, Fe, Na, Mn, and Zn versus irrigation interval exhibited quadratic relations, with the model explained by 71, 86, 79, 81, and 68% associations, respectively. Using x = −b1/2b2 relation, the average optimal irrigation intervals for macro and micronutrient elements were 9 and 8 days, respectively, with the average suggesting that the Day-8 irrigation interval was suitable for improving malnutrition essential elements of okra seeds under field conditions. 

Keywords

Climate change coffee drought-tolerant malnutrition okra water scarcity

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