A friend of mine once said, “It’s always refreshing to see a lush corn field out here just when everything is turning brown”. He was referring to one of the best corn-growing environments of the Philippines in Pangasinan, during the dry season from November to March. Here, you get the right amount of sunlight for your corn and a manageable irrigation system. One that gives each cornfield here a promise: better yields than in any other parts of the country.
Many can tell when you will have a bumper crop from your hybrid corn; just look at how green and clean it is until maturity. A verdant corn field can be likened to a food factory in full operating capacity. The energy from the sun is tapped by the green leaves and converted to food in the most efficient manner. Every cell in the plant’s leaves performs this world’s most important biological process: photosynthesis.
To keep it going, the corn plant will need to have a steady supply of light, moisture, and nutrients. And of course, pests should be kept at bay. Any leaf-feeding insect will definitely reduce photosynthetic activity. Leaf diseases, on the other hand, should be managed since they will reduce effective leaf area and impair the leaf tissues involved in photosynthesis.
Fortunately, in Ilocos and Central Luzon leaf diseases are virtually absent. My friend can continue enjoying the green corn fields of Pangasinan. Farmers in Mindanao and Visayas will turn green in envy for their Luzon counter parts. Layab as they call leaf blights in vernacular is very rarely a concern. In the previous issue, we’ve directed our topic on lodging towards stalk rots. This time, we’ll tackle leaf diseases and its impact on yield.
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Posted on November 26th, 2008 under Corn/Maize. Tags: Corn, Corn/Maize, Disease. Comments: None