blossom end rot in green tomatoes understanding calcium deficiency improving tomato plant health for optimal crop yield

unripe tomatoes blossom rot calcium deficiency tomato cultivation agricultural disorders green plant health crop management garden fruit development physiological disorder closeup horticulture gardening tips plants healthy soil nutrient science farming practices diseases organic food vegetable yield care nutrition varieties ecofriendly produce quality sustainable agriculture education maintenance growth environmental impact horticultural seasonal backyard urban crops farm table watering irrigation improvement