Best Foliar Fertilizer For Cotton

Preplant applications of k fertilizer and in some cases mid season foliar applications are effective in correcting deficiencies.

Best foliar fertilizer for cotton.

And if the soil is saturated cotton will need to recover somewhat before it can effectively take up foliar applications. Supplement to a good soil applied program. If you re managing 1 bale ac cotton the extra expense of foliar fertilization won t be worth it. Response to foliar k is unlikely if soil test k is adequate or greater than 125 ppm k.

A valuable feature of petiole testing programs is that weekly sampling tracks nutrient level trends and allows the detection of deficiencies or excesses up to two weeks in advance. Recent work in central and gulf coast areas of texas has demonstrated the importance of cotton k nutrition spiegelhauer et al 2014. In most situations the best strategy to avoid k deficiency is to 1 soil test 2 apply the recommended k fertilizer at planting and 3 consider foliar feeding k during peak bloom. In areas where you think the cotton is not severely stunted you may want to apply some foliar fertilizer to replace some leaching and de nitrification losses.

Foliar feeding general guidelines. Foliar kno 3 applied at 5 to 7 day intervals resulted in significant yield increase over the untreated plots in 1995. The amount of water applied by pivot essentially washes the fertilizer off the leaves making this essentially a soil applied fertilizer. Currently there are a number of commercially available fertilizer additives that are designed to improve the uptake efficiency of p and k fertilizers.

Mulvaney is a uf ifas cropping system specialist and glen harris is a uga soil specialist. Effect of method and time of potassium application on cotton lint yield better crops vol. Those plants will not take up foliar fertilizer until they get some oxygen and start recovering. Jennifer and i have been getting questions about foliar feeding cotton.

Petiole testing is the best way to tell whether you need to foliar feed cotton. Editor s note michael j. Low volume not pivots. Can i apply foliar fertilizer by pivot.

I have received questions about a lot of different foliar fertilizers. Not all nutrients feed well.