The objectives of this study were to 1) develop a protocol for the selection of organic and conventional farm pairs to be used in comparative trials for determining the effects of management practices on the development of the secondary plant metabolites; and 2) to compare lycopene, B-carotene...
19 جولائی 1996 If you have a tomato plant that is healthy and flowering but not setting fruit, the reason is likely related to temperature. Both daytime highs and nighttime lows have a variety of effects on the ability of a tomato to set fruit.