rwanda kadahenda potato bacterial wilt potato crop seed quality community of practice agriculture rpas ndvi sensor uas uav data processing remote sensing drone east africa genotypes tuber yield burundi harvest index tropical lowlands pests and diseases potato planting land preparation potato fertilization potato harvest potato maturity potato storage potato dls potato dehaulming soil erosion soil fertility management soil conservation disease triangle potato pests leafminer late blight potato dieases production factors crop development crop growth yield gap bad storage seed potato storage sprout vigor dls tuber sprout diffused light store aeroponic system screehouse planting techniques seed size seed potato seed degeneration negative selection positive selection production cost market price potato marketing packaging malnutrition nutrition balanced diet seed potato systems seed generation production potato yield gap ssa modeling
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