What are the common misconceptions in cotton cultivation?

Misconception 1, sparse planting. Sparse planting saves labor for cotton farmers, but the boll set per plant limits cotton yield. According to surveys, the boll set per plant among cotton farmers today is mostly between 30 and 40. Setting more than 50 bolls is very difficult. According to theoretical data, every 100 cotton bolls produce one jin of seed cotton. If 1000 plants are grown per mu and each plant sets 50 bolls, the seed cotton yield is 500 jin. If 2500 plants are grown and each plant sets 25 bolls, the seed cotton yield per mu is 625 jin.

This shows that for high cotton yields, density is the key. Only reasonable density can achieve high yields.

Misconception 2, fertilization. Due to the decrease in farmyard manure in recent years, the organic matter in the soil has also decreased. In addition, the excess of large amounts of inorganic fertilizers such as nitrogen and phosphorus has caused deterioration of the soil structure, and soil compaction has worsened cotton diseases. This has seriously affected cotton yield. Reasonable fertilization techniques are also a necessary means of increasing cotton yield.

Misconception 3, chemical regulation. Most cotton farmers spray chemical regulation agents in the late stage of cotton growth. Used this way, too little of the chemical regulation agent has no effect, while too much inhibits the growing point and reduces the number of cotton bolls. Reasonable chemical regulation should be applied in small amounts multiple times.

Misconception 4, late-stage management. Late-stage management of cotton is very important. According to surveys at multiple sites, farmers who can promptly spray foliar fertilizer in the late stage can mostly solve the problem of premature senescence in cotton and improve disease resistance.