Deuteronomy 28:1-2 NKJV
28 “Now it shall come to pass, if you diligently obey the voice of the
Lord your God, to observe carefully all His commandments which I
command you today, that the Lord your God will set you high above all
nations of the earth. 2 And all these blessings shall come upon you
and overtake you, because you obey the voice of the Lord your God:
It's true that obedience to God's commandments is essential for experiencing blessings and favor from God. Including agricultural prosperity. However, the full elimination of the curse on the ground will happen when all things are redeemed and restored in Christ. This restoration is described in Romans 8:19-23, where creation itself is described as groaning in anticipation of its liberation from bondage to decay and corruption.
Romans 8:19-23 NKJV
19 For the earnest expectation of the creation eagerly waits for the
revealing of the sons of God. 20 For the creation was subjected to
futility, not willingly, but because of Him who subjected it in hope;
21 because the creation itself also will be delivered from the bondage
of corruption into the glorious liberty of the children of God. 22
For we know that the whole creation groans and labors with birth pangs
together until now. 23 Not only that, but we also who have the
firstfruits of the Spirit, even we ourselves groan within ourselves,
eagerly waiting for the adoption, the redemption of our body.