Btrr Varieties, Herbicides and No-Till Farming Find More
Application in Growing Corn, Dispense with Carabao
Ben G. Bareja, July 2014

Yes, there has been a renewed vigor in growing corn. Corn farming peaks to a high level, literally and figuratively. This is so, at least in our remote, mountainous part of Sarangani. And so it is with zero tillage and no-till farming. Where only the foot of mountains to both sides of Bluan River having relatively flat terrain were previously devoted to corn, even those with steep slopes and the peaks have, since April of this year, been put to use.

There’s the rain, but the main reason is that the stack Btrr corn has become available at affordable prices. This variety had been genetically modified to contain genes which enable it to produce endotoxin (within the plant) which causes toxicity to lepidopteran insects like the corn borer. The variety is likewise resistant to  glyphosate, a systemic, nonselective post emergence herbicide hence the “rr” for round-up ready. 

This built-in resistance to glyphosate allows the blanket spray application of the herbicide to kill target weeds without injuring the corn crop. It also introduced the farmers to other herbicides and their proper use including various selective and non-selective weed killers.

For the poor, ethnic, traditional, marginal farmers of this place, Btrr has made growing corn much easier.

Never mind that there are many who resist the proliferation of GMOs or transgenic varieties of crops. It gave them an alternative means of making use of idle land and idle hours; it enabled them to produce, or at least makes them confident that they can produce harvest with sufficient surplus to buy the food for the table and other basic needs. 

For them this variety adapts easily to their sustainable farming methods. Yes, sustainable in the sense that they are able to engage in corn growing with labor cost and necessary expense that their pockets can afford to part with. With this variety, they are able to make productive cogonal and even the steepest parts of their farmlands which cannot be tilled even if carabao is available.  

Growing corn has accelerated by applying no-till farming techniques. Even the steep slopes and mountain peaks have been utilized.
Image shows burned area above a cliff. It may appear inaccessible from below but no, it's prepared for growing corn.

No longer is it necessary to till the land to kill the weeds prior to corn planting to ensure seedling emergence and growth until maturity. In place of tillage, pre-planting land preparation is accomplished by slash-and-burn and herbicide spraying. And the time needed to prepare the land is so much more reduced! 

No longer is hand weeding necessary as well nor shallow cultivation by off-barring and hilling-up. For decades these operations were deemed necessary in growing corn particularly in relation to interrow weeding and in sidedress application of fertilizers, but these practices have been abandoned and replaced by weed control through herbicidal spray. Likewise these farmers are not convinced about loss of nitrogen through volatilization and the importance of covering fertilizers with soil after sidedress application which, in conventional farming, is accomplished through interrow passage of the plow.

And so these corn farmers realized that the traditional beast of burden, the carabao, was not necessary anymore. As consequence, many carabaos were disposed. To many sectors this impact of glyphosate-resistant or glyphosate-tolerant corn on carabao population is worrisome. Other concerns, including environmental impacts, have likewise been raised.

But to these traditional corn growers, to these marginal farmers which Concern Worlwide defines as those who are ‘farming yet hungry’, the choice is a matter of practical necessity.

They are likewise unanimous that the horse is a better mode of transport compared to the carabao both for humans and crop produce to and from these rugged mountains. There are no roads and the trails are oftenly destroyed by rainwater. The river crossings are always strewn with big stones carried by flood during the rainy season. 

And so, under the circumstances,  no-till farming with the use of glyphosate-resistant varieties has become a practical choice for these rural farmers to continue growing corn but in larger scale. Essentially, this farming technology combines the application of slash-and-burn method of land preparation and chemical weed control by herbicidal spray.

Continue Reading: How Marginal Farmers Practice No-Till Corn Farming

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