What are some practical methods to increase sweet potato yields?
What methods can increase sweet potato yields? Please advise. To increase sweet potato yields, you can refer to the following methods: (1) Change vine turning to vine lifting. In the past, many farmers habitually turned sweet potato vines, lifting the stems and vines with a wooden stick and beating them hard to prevent them from rooting. During the growth of sweet potatoes, vines are generally turned 2-3 times, causing heavy damage to the stems and vines and reducing yields by up to 20%. Switching to vine lifting can increase yields by more than 10%. The method is: when the field is watered or after rain, lift the stems and vines by hand and move them to another place, so the original leaf layers are not disturbed and the sweet potato stems and vines will no longer root.
What methods can increase sweet potato yields? Please advise.
To increase sweet potato yields, you can refer to the following methods:
(1) Change vine turning to vine lifting. In the past, many farmers habitually turned sweet potato vines, lifting the stems and vines with a wooden stick and beating them hard to prevent them from rooting. During the growth of sweet potatoes, vines are generally turned 2-3 times, causing heavy damage to the stems and vines and reducing yields by up to 20%. Switching to vine lifting can increase yields by more than 10%. The method is: when the field is watered or after rain, lift the stems and vines by hand and move them to another place, so the original leaf layers are not disturbed and the sweet potato stems and vines will no longer root.
(2) Pinch off the growing tips in time. When the sweet potato vines reach 40-50 cm long, pinch off the growing tips. Later, when the branches reach 30-35 cm long, continue pinching off the tips. This method can inhibit excessive vine growth, avoid excessive nutrient consumption, and thereby concentrate nutrients in the tuberous roots. The best time to pinch off the growing tips is at noon on a sunny day. Note that early, thin and barren land should not have the tips pinched off.
(3) Foliar fertilizer spraying. During the stage when the sweet potato plants are rounded and the tuberous roots are swelling, spray the leaves with a 500-fold potassium dihydrogen phosphate aqueous solution and a 200-fold rice vinegar solution respectively, at 60-65 kg per mu, which can increase yields by more than 400 kg.
(4) Irrigate the roots with wood ash water. When sweet potatoes reach the late growth stage and the tubers have pushed cracks in the soil, mix wood ash with water at a ratio of 1:30, and use the filtrate to fill the cracks for the sweet potatoes. This method can not only increase yields by 20%-30%, but also make the tubers tasty and good in quality.
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